When building anything that includes NsMath/Vector.h or NsMath/Transform.h with Xcode clang version at least 14, and -Wdeprecated-copy enabled, the warning is triggered in several places:

NsMath/Vector.h:30:5: error: definition of implicit copy assignment operator for 'Vector2' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]
Vector2(const Vector2& v) = default;
^
NsMath/Matrix.inl:16:13: note: in implicit copy assignment operator for 'Noesis::Vector2' first required here
mVal[0] = Vector2(v00, v01);
^
NsMath/Vector.h:99:5: error: definition of implicit copy assignment operator for 'Vector3' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]
Vector3(const Vector3& v) = default;
^
NsMath/Matrix.inl:244:13: note: in implicit copy assignment operator for 'Noesis::Vector3' first required here
mVal[0] = Vector3(v00, v01, v02);
^
NsMath/Vector.h:168:5: error: definition of implicit copy assignment operator for 'Vector4' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]
Vector4(const Vector4& v) = default;
^
NsMath/Matrix.inl:612:13: note: in implicit copy assignment operator for 'Noesis::Vector4' first required here
mVal[0] = Vector4(v00, v01, v02, v03);
^
NsMath/Transform.h:31:5: error: definition of implicit copy assignment operator for 'Transform2' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]
Transform2(const Transform2& m) = default;
^
NsMath/Transform.inl:126:11: note: in implicit copy assignment operator for 'Noesis::Transform2' first required here
this = PostTrans(this, -centerX, -centerY);
^

The above output is when building with version 3.1.4, but I did a quick check and looks like 3.1.5 headers still look the same, I just haven't tested it.

This issue is especially annoying when building with -Werror. Of course, we can work around it by disabling the warning before including these, but would be nice if it wasn't required.